Originally posted by: robothouse77
http://answers.google.com/answers/threadview?id=6381
"All things being equal, you will burn more calories by running an
hour than walking an hour. It is true that walking a mile will burn
more calories than running a mile -- although it takes longer to do
so. When you run a mile, you're burning mostly sugar, or
carbohydrates, which is how your body gives you fast energy in bursts.
When you walk a mile, it gives your metabolism time to switch from
burning carbohydrates to burning fat."
WebMD - Dean Ornish, MD Q A: